r238137 - in /branches/gcc-4_9-branch/gcc: Chan...

[jakub@gcc.gnu.org]

Author: jakub
Date: Thu Jul  7 21:47:40 2016
New Revision: 238137

URL: https://gcc.gnu.org/viewcvs?rev=238137&root=gcc&view=rev
Log:
	Backported from mainline
	2016-02-26  Jakub Jelinek  <jakub@redhat.com>
		    Eric Botcazou  <ebotcazou@adacore.com>

	PR rtl-optimization/69891
	* dse.c (scan_insn): If we can't figure out memset arguments
	or they are non-constant, call clear_rhs_from_active_local_stores.

	* gcc.target/i386/pr69891.c: New test.

Added:
    branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr69891.c
Modified:
    branches/gcc-4_9-branch/gcc/ChangeLog
    branches/gcc-4_9-branch/gcc/dse.c
    branches/gcc-4_9-branch/gcc/testsuite/ChangeLog